Datasheet LTC3459 (Analog Devices) - 4

LTC3459
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, unless otherwise noted). VIN and VOUT Quiescent Current Minimum ROUT vs VIN Maximum POUT vs VIN vs Temperature
4000 400 16 VOUT = 10V V V OUT = 10V IN = 3.3V 3500 VOUT = 7.5V 350 V V OUT = 7.5V 14 OUT = 5V VOUT = 5V VOUT = 5V 3000 VOUT = 3.3V 300 VOUT = 3.3V 12 L = 22μH L = 22μH IIN 2500 250 10 (Ω) 2000 (mW) 200 8 OUTR OUT 1500 P 150 CURRENT (μA) 6 1000 100 4 IOUT 500 50 2 0 0 0 1.5 2 2.5 3 3.5 4 4.5 5 5.5 1.5 2 2.5 3 3.5 4 4.5 5 5.5 –40 –20 0 20 40 60 80 VIN (V) VIN (V) TEMPERATURE (°C) 3459 G01 3459 G02 3459 G03
Switching Frequency N-Channel and P-Channel vs VIN at Various VOUTs VOUT Regulation vs VIN and COUT MOSFET RDS(ON) vs Temperature
3.0 2.0 6 VOUT = 10V 4.7μF VOUT = 5V VOUT = 7.5V 1.5 10μF V 22μF 5 2.5 OUT = 5V VOUT = 3.3V 1.0 47μF PCH L = 22μH VOUT = 5V OUT 4 L = 22μH 2.0 0.5 (Ω) NCH 0 3 1.5 DS(ON)R –0.5 FREQUENCY (MHz) % CHANGE IN V 2 –1.0 1.0 1 –1.5 0.5 –2.0 0 1.5 2 2.5 3 3.5 4 4.5 5 5.5 1.5 2 2.5 3 3.5 4 4.5 5 5.5 –40 –20 0 20 40 60 80 VIN (V) V TEMPERATURE (°C) IN (V) 3459 G04 3459 G05 3459 G06
Shutdown Threshold Voltage vs Temperature Burst Cycle Switch Pin Waveform
1.2 1.0 SW SHDN RISING CURRENT SW 50mA/DIV CURRENT 0.8 50mA/DIV SHDN FALLING 0.6 INDUCTOR INDUCTOR CURRENT CURRENT 50mA/DIV 0.4 50mA/DIV 0.2 VIN = 3.3V 1μs/DIV 3459 G08 VIN = 3.3V 100ns/DIV 3459 G09 SHUTDOWN THRESHOLD VOLTAGE (V) VOUT = 5V VOUT = 5V L = 22μH L = 22μH 0 –40 –20 0 20 40 60 80 TEMPERATURE (°C) 3459 G07 3459fc 4